<template>
  <div class="app">
    <h1>欢迎你，{{name}}</h1>
    <h2>欢迎你，{{name}}</h2>
    <h3>欢迎你，{{name}}</h3>
  </div>
</template>

<script>
    export default {
        name:'App',
        data() {
            return {
                name:'常琪琪'
            }
        },
    }
</script>

<style>
    .app {
        background-color: skyblue;
        padding: 20px;
    }
</style>